Angle cutter



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J. E. scHLENKER'r ANGLE CUTTERv Filed Nov. 20, 1944 3 Sheets-Sheet l S /vl/ ATTD RN EYE My 4, 1948- JfE. scHLx-:NKERT ANGLE CUTTER v Filed Now). 2o, 1944 3 Sheets-Sheet 2 May 4, 1948.

J. SCHLENKERT l ANGLE CUTTER A Filed NOV. 20. 1944 5 sheets-Sheet s ATrclR'NEYs Patented May 4, 1948 UNITED PAT ein f orifice ANGLE CUTTER .361m hsemeiikeitjnetroit,Mich. y ,-ii'pp'licatonfNovember 2o, 119214, serial No. 564,272

V Claims. (01.294103) vThe invention vrelates toan :angle cutter, rand more especially to :an adjustable angle cutter.

y'lheprimary object of the invention is the provision .fof -a .cutter of this character, Awherein :a series fof cutting bladesare varranged in ahead, which :constitutes thehub vof the cutter, and lthese blades can be selectively adjusted for varying the pitch fof the same, `the adjustment :being novel land uniqueior effecting adjustment with ease and dispatch, as well as Awith accuracy.

Another object :of 'the invention .is the `provision of a cutter .of this character, wherein the blades .are .iso .mounted :for adiustinent, without yresultant 'chatter fand :loss of adjustment, the 'said blades being locked. in position, fazfteradjustment thereof and in this manner will be maintained iirmrand secure.

A further object 'of the invention is the provision of a cutter `Vof this character, wherein one set .of Ibla-des will serve for different angular cuts, and these maybe reversed, the cutter being usable 4on milling machines for cutting metal, aluminum, plastic material -or wood, the reversible feature being :for cutting operation, either right or left hand. y A still :further object of -thefinvention 4is, the provision fof a cutter of this character, which is simple g in construction, thoroughly reliable and efficient-in operation, strong, durable, readily and feasilyadjusted, self contained accurate inthe working thereof, compact, and inexpensive to manufacture and install.

With these and other objectsin-view, the invention consistsi-n the features of construction, combination and arrangement of parts as will `be hereinafter more fully described, illustrated in the accompanying drawings, which show the preferred and modified forms of construction thereof, and pointed out in the claims hereunto appended.

In the accompanying drawings:

Figure 1 is a facial elevation of the cutter constructed in accordance lwith the invention.

Figure 2 is a side view thereof.

Figure 3 is a view similar to Figure 1 looking toward the opposite face thereof.

Figure 4 is a sectional View taken on the line 2 4 of Figure 2 looking in the direction of the arrows.

Figure 5 is a side view of one section of the cutter.

Figure 6 is a side view of the other section thereof, with the blades removed.

Figure 7 is an exploded sectional view taken on the line 1 1 of Figure 1 looking in the direction of the arrows.

.Fig-ure 8 is an elevation, partly broken away, of :a modified form -of lconstruction of the cutter.

, Figure Seis an edgeview of the same, and partly broken away.

Figure 1f0 is afragmentary sectional View thereof. I

'.Figure l1 is -a further fragmentary sectional view of the same.

.Similar reference characters indicate corresponding parts throughout the several views in the drawings. V y

Referring to the drawings in detail, particularly Figures 1 to 7, inclusive, A designates generally .the adjustable cutterin its entirety, constructed in accordance with the invention. The cut-ter'A comprises apair -of companion body sections I and H., respectively, the former having an arbor sleeve 2provided with blades and slots I-3 and 14, respectively, the blades `or wings |3 being disposed on lines parallel to .tangents through the cen-ter bore 15in the arbor sleeve l2, and present an .inclined or beveled outer rsurface I'B, which extend .at onelside of each slot I4 to present a fifteen degree .15 degree) spiral cut as shown in @Fig-5. 'I-hese .blades project beyond -one end of the arbor sleeve l-2,wh'ich atthis point .presents a beveled coupling rim I8, yfor a companion coupling edge I9 lof *the 4section H.

Thesection rH is formed with a matching ar- .bor sleeve or hub '211 4tolthe sleeve l2, with a blunt end edge2| v:opposite to the edge [9. The sec- 'tion Il concentric to the sleeve 2! is formed with bear-.ing ribs or arms 2l .spaced `apartby slots .22 radially disposedlto the `'bore 2'3 inthe sleeve 2'0. One face ofthe slots 22 presents a beveled 4face as at 25, and within these slots 22 are tted the cutter blades 26, which are formed with segmental Wings 21, in the arcuate edge of each are cut serrations 28 for engagement by a tool set locking pin or screw 29, accessible through a clearance 30 in the said section Il, and in this manner the blades 2t can be locked at any desired or determined angle., The blades 26 each turn on a pivot 3| mounted in the section I l, and this pivot being tool set.

The sections l0 and Il with the blades in place are interfitted with each other on a shaft not shown and held so intertted in any desiramodified form of my invention includes a head B having a body part 34 formed with a plurality of radially spaced slots 35 opening through the outer perimeter thereof. The slots are of the same width as the thickness of blade to be received-see Figures 10 and l1, and the front upper, and the back lower, sides of the slot 35a and 35b respectively are relieved, that is to say a space will exist between the front and back of the blades under the influence of pressure, since when the blade is positioned in the slot under cutting pressure in making a cut, the blade will be forced against the sides that absorb cut-Y ting pressure, thus permitting quick release Vof the blades. The actuating bolts are offlcenter.

with relation to the bottom of the slot 35 as shown, to permit this adjustment. In line withj the above there is intersecting each slot ,35 an.,

adjusting bolt or screw 35 its threads meshing with serration 38 in the wing 39 of a turnable blade 40 which swings on the pivot 4I, counterseated in a cut out 42 in the body 34, and accessible therethrough. The bolt or screw -36 has a lock nut 43 accessible at one side of the body, while the head of the screw or bolt is accessible for turning at the other side of the body; In operation by turning each bolt or screw v36, each blade 40 can be angularly adjusted with reference to body 34, and the blades are reversible if found desirable for reverse angular cutting operations by the cutter. This form of my invention has a single body section.

What is claimed is:

1. A reamer having a plurality of radiallyl disposed cutting blades in slots in a cutter head, said blades having sharp outer cutting edges substantially parallel to the axisof the cutter head and toothed arcuate inner edges, transversely disposed bolts in the cutter head extending through the said slots pivotally mounting the blades intermediate of the length and width thereof in the slots, means adjusting the blades to set the angle of the cutting edges thereof in relation to the axis of the cutter head, and a hub carryingv wedge shaped blades positioned with the blades in the said slots locking the cutting blades in adjusted positions.

2. In a cutter, the combination, which comprises, a cutter head having a plurality of radially disposed slots extending inwardly from the peripheral'surface thereof, the surfaces forming one side of the slots being parallel to the longitudinal axis of the cutter head and the surfaces forming the other side of the slots positioned at an acute angle to the said longitudinal axis of the cutter head, blades with straight outer cutting edges and toothed arcuate inner edges positioned in the slots, transversely disposed bolts in the cutter head extending through the said slots pivotally mounting the blades in the cutter head, means pivotally adjusting the blades to set the outer cutting edges thereof in relation to the longitudinal axis of the cutter head, and a plurality of wedge shaped blades carried at the end of a hub also positioned in the'slots of the cutter head locking the cutting blades in adjusted positions. 3i. An angle cutter comprising a hub with 15. radially disposed cutter blade carrying arms with blade positioning surfaces on one side of each of f the arms parallel to the axis of the hub and with the surfaces on the other side of the arms slightly inclined in relation to a plane aligned with the axis of the hub, said arms having transverse bolt receiving openings therethrough with shoulders in the openings, cutter blades with straight cutting edges parallel to the axis of the hubjhaving toothedarcuate inner edges and with threaded g5 openings therein 'registering with the transverse openings of theY arms, bolts in the openings threaded inthe blades for Aholding the blades against the blade positioning surfaces of the arms, means engaging the toothed inner edges of the blades for locking ythe blades in adjusted positions, and removable tapering wings carried by a sleeve aligned with the hub positioned between the surfaces of the blades and inclined surfacesof the arms coacting with the locking means for clam'ping the blades in adjusted positions.

JOHN E. SCHLENKERT.

REFERENCES CITED The following references are of record in the `file of this patent: Y

. UNITED STATES PATENTS 

